RetrievePersonalWallRequest in crm to get post

RetrievePersonalWallRequest personalWallRequest = new RetrievePersonalWallRequest();
                        personalWallRequest.CommentsPerPost = 50;
                        personalWallRequest.PageNumber = 1;
                        personalWallRequest.PageSize = 20;
                        //OrganizationRequest rq = new OrganizationRequest();
                        //rq.
                       
                        var st = slos.Execute(personalWallRequest) as RetrievePersonalWallResponse;